Undefeated boxing champion Floyd Mayweather has confirmed he will apply for a licence to fight Mixed Martial Arts, ramping up speculation the retired boxer will fight former UFC champion Conor McGregor.

Australia's win over Syria at a glance

IN A NUTSHELL: It took extra-time and not quite penalties for Australia to get it done against a plucky Syrian outfit playing with their hearts on their sleeves. The 2-1 win wasn't always the prettiest but it will do the trick and continue Ange Postecoglou's coaching tenure.

AUSTRALIA'S BEST: It has to be Tim Cahill. The 37-year-old proves time and again why he is the sole member of the golden generation still in the Socceroos set-up. He didn't touch the ball as much as Aaron Mooy or Tom Rogic but the evergreen veteran put away the two headers that keep his country on the arduous path to Russia 2018.

MOMENT TO FORGET: With less than six minutes on the clock, Syrian forward Omar Al Somah was slipped a ball on the counter-attack and lifted it over Mat Ryan's head to take the lead and cancel out Australia's precious away goal earned in last week's 1-1 opening-leg draw in Malaysia.

WHAT'S NEXT: The Socceroos progress to a final play-off against the fourth-placed team from North and Central America and the Caribbean (CONCACAF) next month. They will learn their opponent on Wednesday but it looms most likely as Panama or Honduras.